Rafter for greenhouses, etc.



July 26, 1932. GEORGE 1,869,246

' RAFTER FOR GREENHOUSES, ETC

Filed May 9, 1950 ATTORNEY Patented July 2 6, 1932 i r I I n i UNITED STATES rAreNrforties PHILIP n. snorted-1,01" sou'rrrroar; rnivnsirrivama RAFTER FOR onnnnnousrisnrc. i

Application filed May a, 1930. w e; 451,1;2, i

This invention relates to roof construction are "supportedupon the 'outermostflat' surand more particularly tothose forms of roofs faces of the T-shaped metallic rafters -lO. for hot houses, galleries and conservatories, The upper "sides'of the rafterslO are grooved etc, Where the major portion of the roofing to provide longitudinal V-shaped troughs or a is composed of Window panes and the like. gutters 12 having a coating of roofing cement 5;

One of the principal objects of the inven- '12 to adhesively secure lengths of roofing tion embodies the arrangement of supports paper or other Water proof material indifor the window pan s, cated at 1-3. Parting strips 14 are then se- Another object of theinvention consists in ured pon he upp r Side f the roofing the provision and arrangement of alleys 01 paper 13 centrally and longitudinally Of the '60 gutters in the support to relieve condensation apex of the V-shaped valleys or gutters 12 in b tw th supports d i d a the manner suggested'in Figure 3 of the draw-'. A dditi al bj t; f th i v ti 0 mg by nails or other fastenings. The Window sists of parting strips for the supports having panes or lights 15 are then laid upon the roof- 15 connection With the Window panes in the conlng paper 13, between the parting strips 14 6 ti l mannen v and overlapped at their upper and lower ends With th above d th bj t i i Putty and glaziers points are then employed I the invention further consists of the folloW- e n e t mOSt and adjacent portions ing novel features and details of construction, Ofthe Window panes and parting strips. In to be hereinafter more fully described, illusthls n r h metal roof substructure Will {grated in the, accolnpany drawing and pointed separated OI OthGIWlSG insulated fIOIXl tllB' t i th d d hi vnndowllghts and any condensation form- I th d i 7 mg upon the under surface of the indow Figure 1 is a, fragmentary ide elevation lights above the I'OOfiIlg paper and dropped 2a of my improved form of roof construction. thePeOIl W 1 fiOW downwardly through the 75 Fi 2 i a ti l i t k on li valleys or gutters and obviate deterioration 2 2 f Fi 1 of the roofing construct1on-inc dent to the Figure 8 is a sectional view taken on line melhtenfilnee 9 melstllre l p 3 3 f Fi 1 The 1nvention 1s suscept ble of var ous 7 Referring to the drawing in detail wherein ng In form, P P S nd 111 1101 80 like characters 0f reference denote corrcdetails Off CODStlLlCtlOIl, and thGI'lght is heresponding parts,'the reference character 10 in- 1h e e e Such changes as properly dicates generally a conventional form of mefall Wlthln the scope of the pp d l im tallic grating of T-shape cross section gener- H g ri d he invention, What is 5 ally employed in the building of hot house defined 1S1 p p 85 roofs and against Which the transparent win- A roof eenstrlletlen c mprlslng rafters (310W 1i ht or panes repose having open gutters in the uppermost exposed It has been found that this method of roof P thelfeef and eXteIlded i h y construction is faulty in several respects. thereof, parting strips carried by the rafters c Due to the fact that glass and metal have difn r ly 0f th g e and spaced m e ferent coefficients of expansion, the customary lrledlan portion of the latter, and 17 1: Q I seals, established therebetween by putty and hg a g OPP'OSIte elcles f the p ng glaziers points, are destroyed, permitting in- Y strips and spaced from the gutters to faciligress of rain, melting snow and the like and D the e ng nd rrylngofiof coHdenh the glass panes themselves become moist upon SatiOIl pp g therefrom '3' the under sides thereof due to the radical 2. A roof construction comprising rafters difierence of temperature upon opposite sides havlng gutters 1n the uppermost exposed porthereof. t1ons thereof and extended recllmearly there- To avoid all of these diificulties, as heretoof, a facing for the gutters, parting strips k;

fore experienced, I provide rafters 11 which disposed centrally ofthe gutters and, supported thereby upon opposite sides of the median center thereof, and roof coverings abutting opposite sides of the parting strips and spaced from the gutters to facilitate the catching and carrying oii' of condensation dropping therefrom.

3. A green-houseroof structure comprising I rafters having longitudinal gutters V-shaped in the cross sections in the upper sides thereof, facings or paper for the gutters, rectangular parting strips havingtheir under-sides extending across the gutters and spaced from the median center thereof: and hearing at end i edges upon the paper, andrafter sections bearing upon the paper at the side edges of the. gutters and abutting With Vertical sides of the parting strips. 7

In testnnon rwhereof I aflix m si nature.

PHILIP E. GEORGE. 

